I think the main objective is to keep our children safe. Car seats are expensive. I fully understand the economy situation, but there is a reason for ever changing models of car seats. My husband's granddaughter, (we weren't married yet), was killed in an auto accident, because of her car seat. She was 4. The buckle tore her abdominal aorta, causing her to bleed internally, to death.
Car seats are no longer made with the type of buckle system that seat had.
I suggest that a car seat be confiscated by an officer on the scene of any accident, in which the child was in the seat. If they were not in the seat, it should be removed and examined for cracks with a black light system.
There are other ways to save on child expenses. Buy clothes at the yard sales. A child isn't worth the risk. If a person doesn't have the money, maybe a Church could help with that.